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/****************************************************************************
**
** Copyright (C) 2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the documentation of the Pelagicore Application Manager.
**
** $QT_BEGIN_LICENSE:FDL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite licenses may use
** this file in accordance with the commercial license agreement provided
** with the Software or, alternatively, in accordance with the terms
** contained in a written agreement between you and The Qt Company. For
** licensing terms and conditions see https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/contact-us.
**
** GNU Free Documentation License Usage
** Alternatively, this file may be used under the terms of the GNU Free
** Documentation License version 1.3 as published by the Free Software
** Foundation and appearing in the file included in the packaging of
** this file. Please review the following information to ensure
** the GNU Free Documentation License version 1.3 requirements
** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
** $QT_END_LICENSE$
**
****************************************************************************/
/*!
\page troubleshooting.html
\title Troubleshooting
This page contains frequently asked questions/problems and how to fix them.
\table
\header \li \b {Issues}
\row \li \l{ts-01}{How do I check whether I run appman in multi-process mode ?}
\row \li \l{ts-02}{How do I check why my appman doesn't support multi-process mode ?}
\row \li \l{ts-03}{My applications are running slow within appman. What can I do ?}
\row \li \l{ts-04}{How do I check whether my applications use hardware-acceleration ?}
\row \li \l{ts-05}{How do I turn on hardware-accerlation ?}
\endtable
\target ts-01
\b {How do I check whether I run appman in multi-process mode ?}
Either start the application-manager with \c --verbose and look for the
output \c{WindowManager: running in Wayland mode}, or simply start an
application and make sure you can see at least one appman-launcher-qml
process running.
\target ts-02
\b {How do I check why my appman doesn't support multi-process mode ?}
Check the configure output of appman (Most likely you are missing the qtwayland module).
\target ts-03
\b {My applications are running slow within appman. What can I do ?}
Check whether your applications run with hardware acceleration.
\target ts-04
\b {How do I check whether my applications use hardware-acceleration ?}
Run appman with the environment variable \b QSG_INFO=1. You should see output looking similar
this, when starting an application:
\badcode
[DBG | qt.scenegraph.general | c.p.music] Using sg animation driver
[DBG | qt.scenegraph.general | c.p.music] Animation Driver: using vsync: 16.95 ms
[DBG | qt.scenegraph.general | c.p.music] texture atlas dimensions: 1024x1024
[DBG | qt.scenegraph.general | c.p.music] R/G/B/A Buffers: 8 8 8 8
[DBG | qt.scenegraph.general | c.p.music] Depth Buffer: 24
[DBG | qt.scenegraph.general | c.p.music] Stencil Buffer: 8
[DBG | qt.scenegraph.general | c.p.music] Samples: 0
[DBG | qt.scenegraph.general | c.p.music] GL_VENDOR: VMware, Inc.
[DBG | qt.scenegraph.general | c.p.music] GL_RENDERER: llvmpipe (LLVM 5.0, 256 bits)
[DBG | qt.scenegraph.general | c.p.music] GL_VERSION: 3.0 Mesa 17.3.0
\endcode
If \e GL_RENDERER is \e "llvmpipe" you are using software-rendering for your wayland clients.
\note You will also get this information output for the system-ui itself -
make sure to look at the information table that has the application's id in
the prefix (in the example above, \c com.pelagicore.music)
\target ts-05
\b {How do I turn on hardware-accerlation ?}
This depends on your hardware and the operating system:
In general you need to make sure you have the correct drivers installed:
\list
\li NVIDIA on ubuntu/debian you need: \e nvidia-egl-wayland-icd
\li Intel on ubuntu/debian you need: \e libwayland-egl1-mesa
\endlist
On desktop systems make sure your Qt is configured to use at least OpenGL
ES2/ES3 and \b NOT Desktop OpenGL. Check for the following configure summary line
in Qt itself:
\badcode
OpenGL ES 2.0 ........................ yes
\endcode
You can force Qt to use Opengl ES2 by using the \e "--opengl es2" configure option.
Make sure the wayland-egl integration plugin is built:
Check for the following file: \e <QT_DIR>/plugins/wayland-graphics-integration-client/libwayland-egl.so
If that is not available, check the QtWayland configure summary and make sure it
does get built.
*/
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